Roulette

Roll a D20 dice twice per your turn.

1 - you lose instantly ignores all saving effects.
2 - 5 tap all your lands.
6 - 10 get a another roll this turn.
11 - 15 add 5 mana to your mana pool.
16 - 19 add hexproof to a creature.
20 - play one card on the battlefield from
your hand or graveyard.